Sash-lock.



PATENTBD FEB. 21, 1905.

I. G. FRENCH.

SASH LOCK.

. APPLIOATION FILED 09123, 1903. RENEWED JAN. 21. 1906.

//v VEN TOP [In 6: -Eench A TTORNE I UNITED STATES Patented February 21,1905.

PATENT OFFICE. I

IRA GATES FRENCH, OF ORANGE, MASSACHUSETTS, ASSIGNOR OF ONE- HALF TOCHRISTOPHER W. COLLIER AND CHARLES A. PIKE, OF

ORANGE, MASSACHUSETTS.

SASH-LOCK.

SPECIFICATION formingpart of Letters Patent No. 783,373, dated February21, 1905.

Application filed October 23, 1908. Renewed January 21, 1905. Serial No.2&2.108..

To ctZZ whom, it may concern:

Be it known that I, IRA GATES FRENCH, a citizen of the United States,and a resident of Orange, in the county of Franklin and State ofMassachusetts, have invented a new and 1111-- proved Sash-Lock, of whichthe followingis a full, clear, and exact description.

This invention relates to a window-sash lock adapted to be applied tothe meeting-rails of the sashes and of such construction that it willautomaticallylock the sashes as they are moved into closed position. v

The invention resides in certain novel features of construction andarrangement of parts, as will be hereinafter-fully set forth.

This specification is an exact description of one example of myinvention, while the claims define the actual scope thereof.

view of the locking-dog. Fig. 4 is a detail perspective View of thepawl, and Fig. 5 is a detail perspective View of the keeper.

(4 indicates the meeting-rail of the top sash, and b the meeting-rail ofthe bottom sash. To the rail (0 is applied akeeper which comprises abaselate 0, curved walls 0 assin from the outer edge of the base-plate.upward and inward and spaced from each other to form a passage 0 at thelower end of which is a curved rib or bead 0 the purpose of which willbe fully explained hereinafter. The body member of the lock is appliedto the rail 6 of the lower sash and comprises a base-plate (Z and a cased, the outer wall of which curves upward and inward toward the upper endof the keeper-walls 0 and is formed with a notch (Z to receive the dogwhen the same is in the inactive position indicated by the broken linesin Fig. 2. The dog, as best shown in Fig. 3,

comprises the dog proper or body a, formed with a transverse opening atherein and having a finger-piece e PIOJGCtGCl from lts free dog, asbest shownin Fig. 3.

Fig. 3 is a detail perspective edge. Said finger-piece carries a curvedarm at The dog is mounted in the body of the lock on a transverse pin f,which is passed through openings 0" in the bottom edge of the The bottomportion of the dog is formed with a notch eiand this receives a coil orother spring 9, arranged to throw the dog down into the active positionindicated by the full lines in Fig. 2. The dog a has a transverse'groovee in its under face, which is intended to catch a knife-blade or thelike that may be used in the attempt to open the sash-lock by forcingthe blade up between the sashes. This groove catches the blade andprevents fraudulently opening the window. 6 represents an openingin thefinger-piece 0 in which to fasten a cord or its equivalent to facilitatethe operation of the lock.

Mounted on a pin/t within the body of the lock is a pawl e, which isarc-shaped and formed with a shoulder 171 This pawl is passed throughthe opening 0 in the dog a, and its shoulder 71 is adapted to engage thefront wall of the dog when the dog is in vertical position, thus holdingthe dog inactive.

In the operation of the device when the parts are in the position shownin Fig. 2 the two sashes are locked together, since the dog a whenthrown downward passes under the curved walls 0 of the keeper, and itwill be impossible relatively to move the sashes without disengaging thedog from the said walls of the keeper; also, the arm a, riding over thecurved rib or bead 0", draws together the two parts of the lock and thesashes to which they are attached, thus preventinga relatively sidewisemovement of the sashes and the ratv disengage the shoulder a" fromthe-dog e, and the dog, assisted by the spring 9, is instantly throwndown into the locked position illustrated by the full lines in Fig. 2.

The lock may be applied to the sides of the sash, as well as in theposition shown, and when applied to the sides of the sash it may be madeto lock the sashes partly open. In this case the attaching-flanges willstand vertically on one end of the body member and keeper instead of onthe bottoms thereof.

Various changes in the form, proportions, and minor details of myinvention may be resorted to at will Without departing from the spiritand scope thereof. Hence I consider myself entitled to all suchvariations as may lie within the intent of my claims.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. In a sash-lock, the combination of a keeper and aswinging dog coacting therewith, the dog having a plane surface, and atransverse cavity intermediate the ends of the said plane surfaceserving to receive and arrest an instrument moved against the dog tooperate it.

2. The combination of a keeper, a body, an orificed dog mounted to swingon the body and adapted to engage the keeper, and a pawl curvedconcentric to the axis of the swinging movement of the dog and fittingloosely in the orifice of the dog, the pawl having a shoulder coactingwith the dog.

3. The combination of a keeper, an orificed dog movable into and out ofengagement therewith, and a pawl projecting loosely through the orificein the dog.

4. The combination of a keeper, an orificed dog movable into and out ofengagement therewith, and a'pawl projecting loosely through the orificein the dog, said pawl projecting laterally beyond the dog into positionto engage the keeper, whereby to disengage the pawl from the dog.

5. A sash-lock, comprising a keeper having a passage therein and a headat one end of the passage, a body, a dog pivoted on the body and movableinto the keeper to lock the sash, said dog having a part movable throughthe passage in the keeper, and a curved arm adapted to engage the saidbead when the dog is in locked position.

6. A sash-lock, comprising a keeper having a passage therein and a beadat one end of the passage, a body, a dog pivoted on the body and movableinto the keeper to lock the sash, said dog having a part movable throughthe passage in the keeper, a curved armadapted to engage the said beadwhen the dog is in locked position, a spring serving to throw the doginto active position, and a releasable means for holding the dog ininactive position.

'7. A sash-lock, comprising an overhanging keeper, and a pivoted dogadapted to swing into the keeper and engaged with the interior wallsthereof, whereby to lock the sash, said dog having a part projectedbeyond the keeper to facilitate the manipulation of the dog.

8. A sash-lock, comprising an overhanging keeper having a passagetherein, and a pivoted dog adapted to move into the keeper, said dogbeing constructed to engage with the inner.

surface of said keeper, on either side of said passage.

9. Asash-lock, comprising an overhanging keeper provided with a verticalpassage having a bead at the base thereof, a dog mounted to swingbeneath -the keeper, and provided with an arm to engage the bead,said-dog being constructed to engage with the inner surface of saidkeeper on either side of said passage.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

IRA GATES FRENCH. Witnesses:

ERASIUS ASH, STEPHEN FRENCH.

